/*
 * Copyright (c) 2009 DeledImporter
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'Pyro Games' nor the names of its contributors 
 *   may be used to endorse or promote products derived from this software 
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package net.pyrogames.deled.light;

import net.pyrogames.deled.math.DXSVector3f;

/**
 * A light that has no location (assumed its location is infinitely away)
 * but has a direction to as where its light is cast.
 * 
 * @author Nicholas Woodfield
 *
 */
public class DXSDirectionalLight extends DXSLight{

	/** Direction the light is pointing in */
	private DXSVector3f direction;
	
	/** 
	 * Default constructor. Automatically normalizes the 
	 * direction.
	 * 
	 * @param name
	 * 		Name of the light
	 * @param dir
	 * 		Direction of the light
	 */
	public DXSDirectionalLight(String name, DXSVector3f dir){
		super(name);
		direction = new DXSVector3f(dir);
		direction.normalizeLocal();
	}
	
	/**
	 * Set the direction of this light and normalizes it.
	 * 
	 * @param dir
	 * 		<code>DXSVector3f</code>
	 */
	public void setDirection(DXSVector3f dir){
		direction.set(dir);
		direction.normalizeLocal();
	}
	
	/**
	 * Get the direction of this light.
	 * 
	 * @return
	 * 		<code>DXSVector3f</code>
	 */
	public DXSVector3f getDirection(){
		return direction;
	}
	
	@Override
	public Type getType() {
		return DXSLight.Type.Directional;
	}

}
